Apparently Peter Capaldi, who every Doctor Who fan will soon know of as the 12th Doctor, was cast as a WHO Doctor in World War Z. I saw that movie with a friend and I can not for the life of me remember him being in that film. I'm going to have to watch it again and check this out, because that just seems way more amusing that it should be, for him to be cast in Doctor Who and played a WHO Doctor as well.
